Type of Publication
Year of Publication
W. Breitung

Hydrogen is not more dangerous than current fossil energy carriers, but it behaves differently. Thereforehydrogen specific analyses and countermeasures will be needed to support the development of safe hydrogentechnologies. A systematic step-by-step procedure for the mechanistic analysis of hydrogen behaviour andmitigation in accidents is presented. The procedure can be subdivided into four main parts: 1.) 3D modellingof the H2-air mixture generation, 2.) hazard evaluation for this mixture based on specifically developedcriteria for flammability, flame acceleration and detonation on-set, 3.) numerical simulation of theappropriate combustion regime using verified 3D-CFD codes, and 4.) consequence analysis based on thecalculated pressure and temperature loads.